The RAP-119-TRA1U consists of the RAM-TUBE 2008 fishing rod holder and Track Ball for any track system including the RAM Tough-Track. Offering the patented RAM rubber ball and socket feature, you can rotate the rod holder 360 degrees, while tilting the cradle forward and back for the optimum angle. The RAM-TUBE 2008 tube holder integrates the unique rubber ball and socket design with a self draining and quick to access tube for the butt of most any fishing rod. The tube is made of extremely durable composite. Ideally suited for anything from Kayaks to Tournament boats, this compact and simple design is ready for your next day on the water. T-Bolt Dimensions: .48" x .95" Tube Dimensions: Inner diameter: 1.9" Inner tube length: 10" (from bottom to top of lip)